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Radiant|Lab Grown|IGI

3.10ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG817693421

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

Certificate IGI LG817693421

Diamond specifications and retailer prices

From $1,973 USD
As of October 27, 2026
Save $6,040 USD (75%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $8,013 USD at Taylor and Hart · As of October 27, 2026
View at Taylor and Hart

About this 3.1ct lab-grown radiant diamond

This 3.1ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG817693421 or 817693421. Listed at 20 retailers as of October 27, 2026, with prices from $1,973 to $8,013, a $6,040 spread on the same certified stone. Taylor and Hart lists it at $8,013. 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

3.10
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.6°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817693421
Dimensions10.30 × 7.28 × 4.78 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
10.30 mm7.28 mm3.10 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817693421
Side View
Table 62.0%Crown 45.6°Girdle: Slightly ThickPavilion 35.4°Culet: NoneDepth 65.7%

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 27
Current: $5,316 USD|Low: $1,973 USD|High: $8,858 USD|Avg: $4,691 USD|-27.7%
Retailer 1
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Retailer 19
Taylor and Hart
October 29, 2026
Retailer 3$1,973 USD
Retailer 10$2,147 USD
Retailer 5$2,209 USD
Retailer 18$2,289 USD
Retailer 14$2,455 USD
Retailer 6$2,637 USD
Retailer 12$3,139 USD
Retailer 17$3,147 USD
Retailer 11$3,224 USD
Retailer 4$3,282 USD
Retailer 16$3,584 USD
Retailer 15$3,609 USD
Retailer 19$3,759 USD
Retailer 2$4,343 USD
Retailer 1$5,316 USD
Retailer 7$5,906 USD
Retailer 13$6,572 USD
Retailer 8$6,853 USD
Retailer 9$7,648 USD
Taylor and Hart$8,013 USD

34 data points across 20 retailers

20 retailers$1,973 USD to $8,013 USD

A
Cheapest Retailer
-
$1,973 USD
A
Retailer 2
-
$2,147 USD
View
A
Retailer 3
-
$2,209 USD
View
Final sale: no returns
A
Retailer 4
-
$2,289 USD
View
A
Retailer 5
-
$2,455 USD
View
A
Retailer 6
-
$2,637 USD
HK$20,600 HKD
View
A
Retailer 7
-
$3,139 USD
£2,472 GBP
View
A
Retailer 8
-
$3,147 USD
View
A
Retailer 9
-
$3,224 USD
View
Price last confirmed 17 days ago
A
Retailer 10
-
$3,282 USD
View
A
Retailer 11
-
$3,584 USD
View
A
Retailer 12
-
$3,609 USD
€3,437 EUR
View
B+
Retailer 13
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$3,759 USD
View
B+
Retailer 14
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$4,343 USD
£3,420 GBP
View
B+
Retailer 15
-
$5,316 USD
ZAR 85,876 ZAR
View
B+
Retailer 16
-
$5,906 USD
View
B+
Retailer 17
-
$6,572 USD
£5,175 GBP
View
B
Retailer 18
-
$6,853 USD
View
B
Retailer 19
-
$7,648 USD
SGD 10,335 SGD
View
Most Expensive
B
Taylor and Hart
1ZBGUXG · Oct 27
$8,013 USD
View
19 more retailers have this diamond
Prices start from $1,973 USDSave up to $6,040 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
3.10ct Radiant
$1,973 USD