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Round|Lab Grown|GIA

1.65ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • GIA 6455007501

Certificate GIA 6455007501

Diamond specifications and retailer prices

From $420 USD
As of November 1, 2026
Save $1,494 USD (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,914 USD at MOH London · As of November 1, 2026
View at MOH London

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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6455007501. Listed at 16 retailers as of November 1, 2026, with prices from $420 to $1,914, a $1,494 spread on the same certified stone. MOH London lists it at $1,914. 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

1.65
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41°
OriginLab Grown
Grading LabGIA
CertificateGIA 6455007501
Dimensions7.60 × 7.55 × 4.64 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.60 mm7.55 mm1.65 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6455007501
Side View
Table 59.0%Crown 33.5°Girdle: NUL-NULPavilion 41°Culet: NoneDepth 61.3%

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: Nov 1
Current: $1,914 USD|Low: $403 USD|High: $1,937 USD|Avg: $966 USD
MOH London
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
November 1, 2026
Retailer 11$420 USD
Retailer 4$470 USD
Retailer 13$521 USD
Retailer 10$665 USD
Retailer 6$705 USD
Retailer 3$767 USD
Retailer 7$780 USD
Retailer 2$812 USD
Retailer 8$836 USD
Retailer 14$945 USD
Retailer 9$1,193 USD
Retailer 5$1,674 USD
Retailer 12$1,780 USD
MOH London$1,914 USD

42 data points across 14 retailers

16 retailers$420 USD to $1,914 USD

A
Cheapest Retailer
-
$420 USD
A
Retailer 2
-
$470 USD
View
Retailer 3
-
$521 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
$521 USD
View
A
Retailer 5
-
$576 USD
HK$4,500 HKD
View
B+
Retailer 6
-
$665 USD
View
B+
Retailer 7
-
$668 USD
View
B+
Retailer 8
-
$705 USD
View
B+
Retailer 9
-
$767 USD
View
B+
Retailer 10
-
$780 USD
£614 GBP
View
B+
Retailer 11
-
$812 USD
£639 GBP
View
B+
Retailer 12
-
$836 USD
€796 EUR
View
B
Retailer 13
-
$1,193 USD
View
B
Retailer 14
-
$1,674 USD
View
B
Retailer 15
-
$1,780 USD
View
Most Expensive
B
MOH London
6455007501 · Nov 1
$1,914 USD
£1,507 GBP
View
15 more retailers have this diamond
Prices start from $420 USDSave up to $1,494 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
$420 USD