Radiant|Lab Grown|IGI

5.16ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG770633971

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG770633971

Diamond specifications and retailer prices

From $8,837 USD
As of October 30, 2026
Save $23,562 USD (73%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $32,399 USD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 5.16ct lab-grown radiant diamond

This 5.16ct lab-grown radiant sits in the over five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG770633971 or 770633971. Listed at 21 retailers as of October 30, 2026, with prices from $8,837 to $32,399, a $23,562 spread on the same certified stone. Taylor and Hart lists it at $32,399. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.16
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.9°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770633971
Dimensions12.36 × 8.53 × 5.57 mm
L/W Ratio1.45
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
12.36 mm8.53 mm5.16 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770633971
Side View
Table 64.0%Crown 44.9°Girdle: MED-STKPavilion 34.7°Culet: NoneDepth 65.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $12,277 USD|Low: $8,837 USD|High: $34,569 USD|Avg: $15,458 USD|-7.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
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Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 17
Retailer 18
Taylor and Hart
November 1, 2026
Retailer 9$8,837 USD
Retailer 6$9,065 USD
Retailer 14$9,190 USD
Retailer 7$9,897 USD
Retailer 17$10,150 USD
Retailer 3$10,251 USD
Retailer 2$10,942 USD
Retailer 18$11,110 USD
Retailer 15$11,221 USD
Retailer 10$11,528 USD
Retailer 16$11,858 USD
Retailer 1$12,277 USD
Retailer 8$14,691 USD
Retailer 11$16,281 USD
Retailer 5$18,750 USD
Retailer 12$18,763 USD
Retailer 13$21,303 USD
Retailer 4$28,551 USD
Taylor and Hart$32,399 USD

44 data points across 19 retailers

21 retailers$8,837 USD to $32,399 USD

A
Cheapest Retailer
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$8,837 USD
A
Retailer 2
-
$9,065 USD
View
A
Retailer 3
-
$9,190 USD
View
A
Retailer 4
-
$9,897 USD
View
Final sale: no returns
A
Retailer 5
-
$10,150 USD
View
A
Retailer 6
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$10,251 USD
View
Retailer 7
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$10,251 USD
View
Price last confirmed 16 days ago
A
Retailer 8
-
$10,942 USD
View
A
Retailer 9
-
$11,110 USD
View
A
Retailer 10
-
$11,221 USD
View
A
Retailer 11
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$11,528 USD
View
A
Retailer 12
-
$11,858 USD
View
A
Retailer 13
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$12,277 USD
£9,667 GBP
View
Retailer 14
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$12,344 USD
£9,720 GBP
View
Price last confirmed 22 days ago
A
Retailer 15
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$14,691 USD
£11,568 GBP
View
A
Retailer 16
-
$16,281 USD
€15,506 EUR
View
B+
Retailer 17
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$18,750 USD
View
A
Retailer 18
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$18,763 USD
£14,774 GBP
View
Retailer 19
-
$21,303 USD
A$32,774 AUD
View
Price last confirmed 9 days ago
B+
Retailer 20
-
$28,551 USD
View
Most Expensive
B
Taylor and Hart
Q9L5DMR · Oct 31
$32,399 USD
View
20 more retailers have this diamond
Prices start from $8,837 USDSave up to $23,562 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
5.16ct Radiant
$8,837 USD