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Round|Lab Grown|IGI

1.65ct H SI1 Round Lab Grown Diamond

VG • H/SI1 • IGI LG778692265

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778692265

Diamond specifications and retailer prices

From $252 USD
As of November 1, 2026
Save $1,128 USD (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,380 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.65ct lab-grown round diamond

This 1.65ct lab-grown round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG778692265 or 778692265. Listed at 16 retailers as of October 28, 2026, with prices from $252 to $1,380, a $1,128 spread on the same certified stone. Brilliant Earth lists it at $1,380. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.65
Carat
H
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle41.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778692265
Dimensions7.61 × 7.56 × 4.63 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.61 mm7.56 mm1.65 ctH / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778692265
Side View
Table 63.0%Crown 33.3°Girdle: MED-STKPavilion 41.9°Culet: NoneDepth 61.0%

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: $1,380 USD|Low: $242 USD|High: $2,950 USD|Avg: $804 USD|-3.5%
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
October 29, 2026
Retailer 14$252 USD
Retailer 4$282 USD
Retailer 3$293 USD
Retailer 6$313 USD
Retailer 15$313 USD
Retailer 10$475 USD
Retailer 13$507 USD
Retailer 16$524 USD
Retailer 17$657 USD
Retailer 7$674 USD
Retailer 12$765 USD
Retailer 11$961 USD
Retailer 5$1,005 USD
Retailer 9$1,057 USD
Retailer 2$1,260 USD
Brilliant Earth$1,380 USD
Retailer 8$2,950 USD

25 data points across 17 retailers

16 retailers$252 USD to $1,380 USD

A
Cheapest Retailer
-
$252 USD
B+
Retailer 2
-
$282 USD
View
Final sale: no returns
A
Retailer 3
-
$293 USD
View
Retailer 4
-
$313 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$313 USD
View
A
Retailer 6
-
$475 USD
View
Retailer 7
-
$507 USD
£399 GBP
View
Price last confirmed 15 days ago
A
Retailer 8
-
$524 USD
View
B+
Retailer 9
-
$657 USD
View
B+
Retailer 10
-
$674 USD
View
Retailer 11
-
$765 USD
View
Price last confirmed 11 days ago
B+
Retailer 12
-
$961 USD
View
B+
Retailer 13
-
$1,005 USD
View
B+
Retailer 14
-
$1,057 USD
View
B+
Retailer 15
-
$1,260 USD
£992 GBP
View
Most Expensive
B+
Brilliant Earth
17960371A · Oct 28
$1,380 USD
View
15 more retailers have this diamond
Prices start from $252 USDSave up to $1,128 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
1.65ct Round
$252 USD