Round|Lab Grown|IGI

1.00ct G VS1 Round Lab Grown Diamond

EX • G/VS1 • IGI LG818687089

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818687089

Diamond specifications and retailer prices

From $173 USD
As of October 24, 2026
Save $476 USD (73%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $867 USD at MOH London · As of October 21, 2026
View at MOH London

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818687089 or 818687089. Listed at 20 retailers as of October 23, 2026, with a 275% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818687089
Dimensions6.38 × 6.41 × 3.96 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
6.38 mm6.41 mm1.00 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818687089
Side View
Table 58.0%Crown 33.7°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.9%

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 24
Current: $867 USD|Low: $143 USD|High: $872 USD|Avg: $406 USD|-0.4%
MOH London
Retailer 2
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Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 15
Retailer 16
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Retailer 19
October 26, 2026
Retailer 18$149 USD
Retailer 19$173 USD
Retailer 4$185 USD
Retailer 6$185 USD
Retailer 10$282 USD
Retailer 13$303 USD
Retailer 16$312 USD
Retailer 14$319 USD
Retailer 3$339 USD
Retailer 12$349 USD
Retailer 5$400 USD
Retailer 8$428 USD
Retailer 15$452 USD
Retailer 7$593 USD
Retailer 2$610 USD
Retailer 17$627 USD
Retailer 9$640 USD
Retailer 11$649 USD
MOH London$867 USD

22 data points across 19 retailers

20 retailers$173 USD to $649 USD

Retailer 1
-
$149 USD
Price last confirmed 7 days ago
A
Retailer 2
-
$173 USD
View
Retailer 3
-
$185 USD
View
Price last confirmed 14 days ago
Retailer 4
-
$185 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$282 USD
View
A
Retailer 6
-
$303 USD
£238 GBP
View
Retailer 7
-
$312 USD
ZAR 5,039 ZAR
View
Price last confirmed 7 days ago
A
Retailer 8
-
$319 USD
£251 GBP
View
Retailer 9
-
$339 USD
View
Price last confirmed 7 days ago
B+
Retailer 10
-
$349 USD
€332 EUR
View
Retailer 11
-
$390 USD
View
Price last confirmed 9 days ago
Retailer 12
-
$400 USD
View
Price last confirmed 26 days ago
B+
Retailer 13
-
$428 USD
View
B+
Retailer 14
-
$452 USD
A$695 AUD
View
B
Retailer 15
-
$593 USD
View
B
Retailer 16
-
$610 USD
View
Retailer 17
-
$627 USD
View
Price last confirmed 7 days ago
B
Retailer 18
-
$640 USD
View
B
Retailer 19
-
$649 USD
View
Most Expensive
MOH London
LG818687089 · Oct 21
$867 USD
£683 GBP
View
Price last confirmed 9 days ago
19 more retailers have this diamond
Prices start from $173 USDSave up to $476 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
1.00ct Round
$173 USD