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0.65ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 1559817085

Certificate GIA 1559817085

Diamond specifications and retailer prices

From $1,021 USD
As of October 28, 2026
Save $732 USD (42%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,753 USD at Cape Diamonds · As of October 26, 2026
View at Cape Diamonds

About this 0.65ct natural round diamond

This 0.65ct natural round sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559817085. Listed at 13 retailers as of October 26, 2026, with prices from $1,021 to $1,753, a $732 spread on the same certified stone. Cape Diamonds lists it at $1,753. 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

0.65
Carat
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1559817085
Dimensions5.66 × 5.69 × 3.37 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
5.66 mm5.69 mm0.65 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559817085
Side View
Table 61.0%Crown 32.5°Girdle: MED-MEDPavilion 41.4°Culet: NoneDepth 59.3%

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 28
Current: $1,753 USD|Low: $965 USD|High: $1,760 USD|Avg: $1,356 USD|+2.4%
Cape Diamonds
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 28, 2026
Retailer 13$1,021 USD
Retailer 12$1,025 USD
Retailer 11$1,203 USD
Retailer 8$1,290 USD
Retailer 10$1,290 USD
Retailer 2$1,329 USD
Retailer 9$1,330 USD
Retailer 5$1,351 USD
Retailer 7$1,454 USD
Retailer 6$1,478 USD
Retailer 3$1,513 USD
Retailer 4$1,624 USD
Cape Diamonds$1,753 USD

40 data points across 13 retailers

13 retailers$1,021 USD to $1,753 USD

A
Cheapest Retailer
-
$1,021 USD
A
Retailer 2
-
$1,025 USD
View
B+
Retailer 3
-
$1,203 USD
View
B
Retailer 4
-
$1,290 USD
View
B
Retailer 5
-
$1,290 USD
View
B+
Retailer 6
-
$1,329 USD
£1,046 GBP
View
B+
Retailer 7
-
$1,330 USD
View
B+
Retailer 8
-
$1,351 USD
A$2,078 AUD
View
B
Retailer 9
-
$1,454 USD
£1,145 GBP
View
B+
Retailer 10
-
$1,478 USD
€1,408 EUR
View
B
Retailer 11
-
$1,513 USD
View
B
Retailer 12
-
$1,624 USD
View
Most Expensive
B
Cape Diamonds
cert_1559817085 · Oct 26
$1,753 USD
ZAR 28,315 ZAR
View
12 more retailers have this diamond
Prices start from $1,021 USDSave up to $732 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
0.65ct Round
$1,021 USD