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Round|Lab Grown|IGI

0.99ct D VS1 Round Lab Grown Diamond

ID • D/VS1 • IGI LG818644400

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818644400

Diamond specifications and retailer prices

From $146 USD
As of October 29, 2026
Save $1,391 USD (90%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,537 USD at Queensmith · As of October 27, 2026
View at Queensmith

About this 0.99ct lab-grown round diamond

This 0.99ct lab-grown round sits in the just-under-one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818644400 or 818644400. Listed at 22 retailers as of October 27, 2026, with prices from $146 to $1,537, a $1,391 spread on the same certified stone. Queensmith lists it at $1,537. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.99
Carat
D
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818644400
Dimensions6.49 × 6.44 × 3.87 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.49 mm6.44 mm0.99 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818644400
Side View
Table 57.0%Crown 34°Girdle: MediumPavilion 40.3°Culet: NoneDepth 59.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $311 USD|Low: $140 USD|High: $857 USD|Avg: $369 USD|+6.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 13$146 USD
Retailer 11$162 USD
Retailer 3$181 USD
Retailer 2$245 USD
Retailer 1$311 USD
Retailer 8$327 USD
Retailer 7$344 USD
Retailer 6$370 USD
Retailer 5$415 USD
Retailer 9$451 USD
Retailer 12$462 USD
Retailer 4$577 USD
Retailer 10$848 USD

37 data points across 13 retailers

22 retailers$146 USD to $1,537 USD

A
Cheapest Retailer
-
$146 USD
A
Retailer 2
-
$162 USD
View
Final sale: no returns
A
Retailer 3
-
$169 USD
View
A
Retailer 4
-
$181 USD
View
A
Retailer 5
-
$181 USD
View
A
Retailer 6
-
$205 USD
HK$1,600 HKD
View
B+
Retailer 7
-
$245 USD
View
A
Retailer 8
-
$301 USD
View
A
Retailer 9
-
$311 USD
£245 GBP
View
A
Retailer 10
-
$327 USD
ZAR 5,290 ZAR
View
A
Retailer 11
-
$344 USD
€328 EUR
View
A
Retailer 12
-
$370 USD
£291 GBP
View
B+
Retailer 13
-
$415 USD
View
Price last confirmed 32 days ago
B+
Retailer 14
-
$451 USD
A$694 AUD
View
B+
Retailer 15
-
$462 USD
View
B+
Retailer 16
-
$499 USD
SGD 674 SGD
View
B+
Retailer 17
-
$577 USD
View
B+
Retailer 18
-
$582 USD
View
B
Retailer 19
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$638 USD
View
B
Retailer 20
-
$848 USD
£668 GBP
View
B
Retailer 21
-
$1,022 USD
View
Most Expensive
B
Queensmith
LG818644400 · Oct 27
$1,537 USD
£1,210 GBP
View
21 more retailers have this diamond
Prices start from $146 USDSave up to $1,391 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
0.99ct Round
$146 USD