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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 $1,815 NZD
$1,021 USD
As of October 28, 2026
Save $874 NZD (33%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,115 NZD 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 28, 2026, with a 48% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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: $3,115 NZD|Low: $1,815 NZD|High: $3,129 NZD|Avg: $2,413 NZD|+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$1,815 NZD
Retailer 12$1,822 NZD
Retailer 11$2,138 NZD
Retailer 8$2,293 NZD
Retailer 10$2,293 NZD
Retailer 2$2,361 NZD
Retailer 9$2,364 NZD
Retailer 5$2,401 NZD
Retailer 7$2,584 NZD
Retailer 6$2,628 NZD
Retailer 3$2,688 NZD
Retailer 4$2,887 NZD
Cape Diamonds$3,115 NZD

37 data points across 13 retailers

13 retailers$1,815 NZD to $2,688 NZD

A
Cheapest Retailer
-
$1,815 NZD
$1,021 USD
Retailer 2
-
$1,822 NZD
$1,025 USD
View
Price last confirmed 5 days ago
B+
Retailer 3
-
$2,138 NZD
$1,203 USD
View
B
Retailer 4
-
$2,293 NZD
$1,290 USD
View
B
Retailer 5
-
$2,293 NZD
$1,290 USD
View
B+
Retailer 6
-
$2,361 NZD
£1,046 GBP
View
B+
Retailer 7
-
$2,364 NZD
$1,330 USD
View
B+
Retailer 8
-
$2,401 NZD
A$2,078 AUD
View
B
Retailer 9
-
$2,584 NZD
£1,145 GBP
View
B+
Retailer 10
-
$2,628 NZD
€1,408 EUR
View
B
Retailer 11
-
$2,688 NZD
$1,513 USD
View
B
Retailer 12
-
$2,887 NZD
$1,624 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Cape Diamonds
cert_1559817085 · Oct 26
$3,115 NZD
ZAR 28,315 ZAR
View
Price last confirmed 7 days ago
12 more retailers have this diamond
Prices start from $1,815 NZDSave up to $874 NZD

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
$1,815 NZD