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Round|Natural|GIA

0.65ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 1559817085

Certificate GIA 1559817085

Diamond specifications and retailer prices

From $1,453 AUD
$1,021 USD
As of October 28, 2026
Save $1,042 AUD (42%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,495 AUD 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 $1,453 to $2,495, a $1,042 spread on the same certified stone. Cape Diamonds lists it at $2,495. 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
Colour
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: $2,495 AUD|Low: $1,374 AUD|High: $2,506 AUD|Avg: $1,931 AUD|+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$1,453 AUD
Retailer 12$1,459 AUD
Retailer 11$1,713 AUD
Retailer 8$1,836 AUD
Retailer 10$1,836 AUD
Retailer 2$1,891 AUD
Retailer 9$1,893 AUD
Retailer 5$1,923 AUD
Retailer 7$2,070 AUD
Retailer 6$2,105 AUD
Retailer 3$2,153 AUD
Retailer 4$2,313 AUD
Cape Diamonds$2,495 AUD

39 data points across 13 retailers

13 retailers$1,453 AUD to $2,495 AUD

A
Cheapest Retailer
-
$1,453 AUD
$1,021 USD
A
Retailer 2
-
$1,459 AUD
$1,025 USD
View
B+
Retailer 3
-
$1,713 AUD
$1,203 USD
View
B
Retailer 4
-
$1,836 AUD
$1,290 USD
View
B
Retailer 5
-
$1,836 AUD
$1,290 USD
View
B+
Retailer 6
-
$1,891 AUD
£1,046 GBP
View
B+
Retailer 7
-
$1,893 AUD
$1,330 USD
View
B+
Retailer 8
-
$1,923 AUD
View
B
Retailer 9
-
$2,070 AUD
£1,145 GBP
View
B+
Retailer 10
-
$2,105 AUD
€1,408 EUR
View
B
Retailer 11
-
$2,153 AUD
$1,513 USD
View
B
Retailer 12
-
$2,313 AUD
$1,624 USD
View
Most Expensive
B
Cape Diamonds
cert_1559817085 · Oct 26
$2,495 AUD
ZAR 28,315 ZAR
View
12 more retailers have this diamond
Prices start from $1,453 AUDSave up to $1,042 AUD

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
$1,453 AUD