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Round|Lab Grown|IGI

16.51ct G VS1 Round Lab Grown Diamond

EX • G/VS1 • IGI LG837681313

Shape and cutting style on the report: Round brilliant

Certificate IGI LG837681313

Diamond specifications and retailer prices

From €4,886 EUR
£4,315 GBP
As of November 1, 2026
Save €23,457 EUR (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €28,343 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 16.51ct lab-grown round diamond

This 16.51ct 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 LG837681313 or 837681313. Listed at 19 retailers as of October 31, 2026, with prices from €4,886 to €28,343, a €23,457 spread on the same certified stone. Brilliant Earth lists it at €28,343. 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

16.51
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837681313
Dimensions16.08 × 16.16 × 10.14 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.08 mm16.16 mm16.51 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837681313
Side View
Table 60.0%Crown 36.5°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 62.9%

Caratlytics Score

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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 1
Current: €28,343 EUR|Low: €4,886 EUR|High: €28,557 EUR|Avg: €10,193 EUR|-0.7%
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
Retailer 18
Retailer 19
November 1, 2026
Retailer 12€4,886 EUR
Retailer 9€5,244 EUR
Retailer 16€5,497 EUR
Retailer 3€5,982 EUR
Retailer 4€6,084 EUR
Retailer 15€6,085 EUR
Retailer 18€6,669 EUR
Retailer 11€6,817 EUR
Retailer 17€6,834 EUR
Retailer 5€7,222 EUR
Retailer 10€7,489 EUR
Retailer 13€7,583 EUR
Retailer 8€8,960 EUR
Retailer 19€9,417 EUR
Retailer 14€10,009 EUR
Retailer 2€11,621 EUR
Retailer 6€15,707 EUR
Retailer 7€21,297 EUR
Brilliant Earth€28,343 EUR

23 data points across 19 retailers

19 retailers€4,886 EUR to €28,343 EUR

A
Cheapest Retailer
-
€4,886 EUR
£4,315 GBP
A
Retailer 2
-
€5,244 EUR
$5,882 USD
View
A
Retailer 3
-
€5,497 EUR
$6,165 USD
View
A
Retailer 4
-
€5,982 EUR
$6,709 USD
View
A
Retailer 5
-
€6,084 EUR
$6,824 USD
View
A
Retailer 6
-
€6,085 EUR
$6,825 USD
View
A
Retailer 7
-
€6,669 EUR
$7,480 USD
View
Final sale: no returns
Retailer 8
-
€6,817 EUR
$7,646 USD
View
Price last confirmed 21 days ago
A
Retailer 9
-
€6,834 EUR
$7,665 USD
View
B+
Retailer 10
-
€7,222 EUR
$8,100 USD
View
Retailer 11
-
€7,489 EUR
$8,400 USD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
€7,583 EUR
£6,697 GBP
View
B
Retailer 13
-
€8,960 EUR
$10,050 USD
View
B+
Retailer 14
-
€9,417 EUR
ZAR 170,635 ZAR
View
B+
Retailer 15
-
€10,009 EUR
View
B
Retailer 16
-
€11,621 EUR
A$20,053 AUD
View
B
Retailer 17
-
€15,707 EUR
$17,617 USD
View
B
Retailer 18
-
€21,297 EUR
$23,886 USD
View
Most Expensive
B
Brilliant Earth
21726945A · Oct 31
€28,343 EUR
$31,790 USD
View
18 more retailers have this diamond
Prices start from €4,886 EURSave up to €23,457 EUR

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
16.51ct Round
€4,886 EUR