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Round|Lab Grown|IGI

21.16ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG724557816

Shape and cutting style on the report: Round brilliant

Certificate IGI LG724557816

Diamond specifications and retailer prices

From $10,534 USD
£8,295 GBP
As of November 2, 2026
Save $31,506 USD (75%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $42,040 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 21.16ct lab-grown round diamond

This 21.16ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG724557816 or 724557816. Listed at 18 retailers as of October 31, 2026, with prices from $10,534 to $42,040, a $31,506 spread on the same certified stone. Brilliant Earth lists it at $42,040. 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

21.16
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG724557816
Dimensions17.91 × 17.87 × 10.84 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.91 mm17.87 mm21.16 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG724557816
Side View
Table 58.0%Crown 33.9°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.6%

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: Nov 2
Current: $42,040 USD|Low: $10,531 USD|High: $43,220 USD|Avg: $20,218 USD|-2.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 2, 2026
Retailer 2$10,534 USD
Retailer 16$12,212 USD
Retailer 14$12,260 USD
Retailer 8$12,701 USD
Retailer 6$12,899 USD
Retailer 5$13,276 USD
Retailer 4$14,166 USD
Retailer 9$14,166 USD
Retailer 13$14,170 USD
Retailer 15$15,030 USD
Retailer 3$15,106 USD
Retailer 11$16,487 USD
Retailer 10$23,852 USD
Retailer 12$26,698 USD
Retailer 17$29,830 USD
Retailer 7$41,004 USD
Brilliant Earth$42,040 USD

35 data points across 17 retailers

18 retailers$10,534 USD to $42,040 USD

A
Cheapest Retailer
-
$10,534 USD
£8,295 GBP
B+
Retailer 2
-
$12,212 USD
View
Retailer 3
-
$12,260 USD
View
Price last confirmed 15 days ago
B+
Retailer 4
-
$12,701 USD
View
B+
Retailer 5
-
$12,899 USD
View
B+
Retailer 6
-
$13,276 USD
View
B+
Retailer 7
-
$14,166 USD
View
Retailer 8
-
$14,166 USD
View
Price last confirmed 20 days ago
B+
Retailer 9
-
$14,170 USD
View
B+
Retailer 10
-
$15,030 USD
View
B+
Retailer 11
-
$15,106 USD
View
B+
Retailer 12
-
$16,487 USD
£12,982 GBP
View
B
Retailer 13
-
$20,398 USD
View
Final sale: no returns
B
Retailer 14
-
$23,852 USD
€22,716 EUR
View
B
Retailer 15
-
$26,698 USD
A$41,074 AUD
View
B
Retailer 16
-
$29,830 USD
View
B
Retailer 17
-
$41,004 USD
View
Most Expensive
B
Brilliant Earth
15459111A · Oct 31
$42,040 USD
View
17 more retailers have this diamond
Prices start from $10,534 USDSave up to $31,506 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
21.16ct Round
$10,534 USD