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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 $1,523 AUD
As of November 5, 2026
Save $899 AUD (37%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,288 AUD 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,847 AUD|Low: $1,508 AUD|High: $2,534 AUD|Avg: $1,972 AUD|+9.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 2$1,523 AUD
Retailer 1$1,847 AUD
Retailer 4$1,971 AUD
Retailer 3$2,421 AUD

41 data points across 4 retailers

8 retailers$1,523 AUD to $2,421 AUD

Retailer 1
-
$1,367 AUD
Price last confirmed 29 days ago
Retailer 2
-
$1,367 AUD
View
Price last confirmed 29 days ago
Retailer 3
-
$1,420 AUD
View
Price last confirmed 38 days ago
A
Retailer 4
-
$1,523 AUD
View
Retailer 5
-
$1,578 AUD
View
Price last confirmed 38 days ago
B+
Retailer 6
-
$1,847 AUD
View
B
Retailer 7
-
$2,421 AUD
View
Most Expensive
NZ Jewellers
343ac026-1a00-45eb-882b-539f5026d87e · Sep 28
$4,288 AUD
$3,002 USD
View
Price last confirmed 39 days ago
7 more retailers have this diamond
Prices start from $1,523 AUDSave up to $899 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
0.85ct Round
$1,523 AUD