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Round|Natural|GIA

0.85ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6511247641

Shape and cutting style on the report: Round brilliant

Certificate GIA 6511247641

Diamond specifications and retailer prices

From $1,896 NZD
As of November 5, 2026
Save $1,119 NZD (37%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $5,340 NZD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 0.85ct natural round diamond

This 0.85ct natural round sits in the just-under-one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6511247641. Listed at 8 retailers as of November 2, 2026, with a 59% 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

0.85
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6511247641
Dimensions6.05 × 6.01 × 3.76 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.05 mm6.01 mm0.85 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6511247641
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.3%

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: Nov 5
Current: $2,300 NZD|Low: $1,879 NZD|High: $3,156 NZD|Avg: $2,456 NZD|+9.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 2$1,896 NZD
Retailer 1$2,300 NZD
Retailer 4$2,455 NZD
Retailer 3$3,015 NZD

41 data points across 4 retailers

8 retailers$1,896 NZD to $3,015 NZD

Retailer 1
-
$1,702 NZD
Price last confirmed 29 days ago
Retailer 2
-
$1,702 NZD
View
Price last confirmed 29 days ago
Retailer 3
-
$1,768 NZD
View
Price last confirmed 38 days ago
A
Retailer 4
-
$1,896 NZD
View
Retailer 5
-
$1,966 NZD
View
Price last confirmed 38 days ago
B+
Retailer 6
-
$2,300 NZD
View
B
Retailer 7
-
$3,015 NZD
View
Most Expensive
NZ Jewellers
343ac026-1a00-45eb-882b-539f5026d87e · Sep 28
$5,340 NZD
$3,002 USD
View
Price last confirmed 39 days ago
7 more retailers have this diamond
Prices start from $1,896 NZDSave up to $1,119 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
0.85ct Round
$1,896 NZD