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Round|Lab Grown|IGI

0.91ct H SI2 Round Lab Grown Diamond

EX • H/SI2 • IGI LG478121789

Shape and cutting style on the report: Round brilliant

Certificate IGI LG478121789

Diamond specifications and retailer prices

From $540 USD
As of October 30, 2026
Save $2,734 USD (84%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $3,274 USD at MOH London · As of October 29, 2026
View at MOH London

About this 0.91ct lab-grown round diamond

This 0.91ct lab-grown round sits in the just-under-one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG478121789 or 478121789. Listed at 5 retailers as of October 29, 2026, with prices from $540 to $3,274, a $2,734 spread on the same certified stone. MOH London lists it at $3,274. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.91
Carat
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478121789
Dimensions6.29 × 6.28 × 3.76 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.29 mm6.28 mm0.91 ctH / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478121789
Side View
Table 61.0%Crown 33.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.9%

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 30
Current: $3,274 USD|Low: $540 USD|High: $3,299 USD|Avg: $1,543 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 2$540 USD
Retailer 4$829 USD
Retailer 7$853 USD
Retailer 6$1,301 USD
Retailer 5$1,346 USD
Retailer 3$1,435 USD
MOH London$3,274 USD

20 data points across 7 retailers

5 retailers$540 USD to $3,274 USD

A
Cheapest Retailer
-
$540 USD
Retailer 2
-
$829 USD
View
Price last confirmed 17 days ago
B+
Retailer 3
-
$1,346 USD
View
B+
Retailer 4
-
$1,435 USD
€1,367 EUR
View
Most Expensive
B
MOH London
LG478121789 · Oct 29
$3,274 USD
£2,578 GBP
View
4 more retailers have this diamond
Prices start from $540 USDSave up to $2,734 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
0.91ct Round
$540 USD