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Radiant|Lab Grown|IGI

5.10ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG816630992

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

Certificate IGI LG816630992

Diamond specifications and retailer prices

From $15,742 AUD
$11,058 USD
As of October 30, 2026
Save $38,681 AUD (71%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $54,423 AUD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 5.1ct lab-grown radiant diamond

This 5.1ct lab-grown radiant sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816630992 or 816630992. Listed at 19 retailers as of October 30, 2026, with prices from $15,742 to $54,423, a $38,681 spread on the same certified stone. Taylor and Hart lists it at $54,423. 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

5.10
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.1°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816630992
Dimensions12.12 × 8.62 × 5.65 mm
L/W Ratio1.41
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
12.12 mm8.62 mm5.10 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816630992
Side View
Table 63.0%Crown 47.1°Girdle: Slightly ThickPavilion 34.9°Culet: NoneDepth 65.5%

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: $29,126 AUD|Low: $15,309 AUD|High: $61,887 AUD|Avg: $28,267 AUD|-16.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
Retailer 13
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Retailer 15
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Retailer 17
Retailer 18
Taylor and Hart
October 31, 2026
Retailer 8$15,742 AUD
Retailer 5$15,964 AUD
Retailer 13$16,371 AUD
Retailer 18$16,823 AUD
Retailer 9$17,115 AUD
Retailer 6$17,630 AUD
Retailer 16$18,016 AUD
Retailer 2$18,261 AUD
Retailer 10$18,261 AUD
Retailer 17$18,713 AUD
Retailer 15$19,481 AUD
Retailer 14$19,677 AUD
Retailer 11$21,750 AUD
Retailer 7$26,165 AUD
Retailer 12$28,181 AUD
Retailer 1$29,126 AUD
Retailer 4$33,399 AUD
Retailer 3$50,885 AUD
Taylor and Hart$54,423 AUD

42 data points across 19 retailers

19 retailers$15,742 AUD to $54,423 AUD

A
Cheapest Retailer
-
$15,742 AUD
$11,058 USD
A
Retailer 2
-
$15,964 AUD
$11,214 USD
View
A
Retailer 3
-
$16,371 AUD
$11,500 USD
View
A
Retailer 4
-
$16,823 AUD
$11,817 USD
View
A
Retailer 5
-
$17,115 AUD
$12,022 USD
View
A
Retailer 6
-
$17,630 AUD
$12,384 USD
View
Final sale: no returns
A
Retailer 7
-
$18,016 AUD
$12,655 USD
View
A
Retailer 8
-
$18,261 AUD
$12,827 USD
View
Retailer 9
-
$18,261 AUD
$12,827 USD
View
Price last confirmed 15 days ago
Retailer 10
-
$18,713 AUD
$13,145 USD
View
Price last confirmed 12 days ago
A
Retailer 11
-
$19,481 AUD
$13,684 USD
View
A
Retailer 12
-
$19,677 AUD
$13,822 USD
View
A
Retailer 13
-
$21,750 AUD
£12,030 GBP
View
A
Retailer 14
-
$26,165 AUD
£14,472 GBP
View
B+
Retailer 15
-
$28,181 AUD
£15,587 GBP
View
B+
Retailer 16
-
$29,126 AUD
€19,485 EUR
View
B+
Retailer 17
-
$33,399 AUD
$23,461 USD
View
B
Retailer 18
-
$50,885 AUD
$35,744 USD
View
Most Expensive
B
Taylor and Hart
HJ0E7UE · Oct 30
$54,423 AUD
$38,229 USD
View
18 more retailers have this diamond
Prices start from $15,742 AUDSave up to $38,681 AUD

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
5.10ct Radiant
$15,742 AUD