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Round|Natural|GIA

0.86ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6521840901

Certificate GIA 6521840901

Diamond specifications and retailer prices

From $1,171 AUD
As of November 4, 2026
Save $1,484 AUD (56%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $4,510 AUD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 0.86ct natural round diamond

This 0.86ct 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 6521840901. Listed at 9 retailers as of November 4, 2026, with a 127% 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

0.86
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6521840901
Dimensions6.07 × 6.05 × 3.79 mm
L/W Ratio1.00
Star length50%
Top View
6.07 mm6.05 mm0.86 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6521840901
Side View
Table 57.0%Crown 36°Girdle: ThickPavilion 41°Culet: NoneDepth 62.6%

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 4
Current: $1,916 AUD|Low: $1,171 AUD|High: $2,671 AUD|Avg: $1,757 AUD|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4$1,171 AUD
Retailer 6$1,250 AUD
Retailer 5$1,303 AUD
Retailer 1$1,916 AUD
Retailer 2$2,026 AUD
Retailer 7$2,034 AUD
Retailer 3$2,656 AUD

35 data points across 7 retailers

9 retailers$1,171 AUD to $2,656 AUD

A
Cheapest Retailer
-
$1,171 AUD
A
Retailer 2
-
$1,250 AUD
View
Retailer 3
-
$1,303 AUD
View
Price last confirmed 28 days ago
Retailer 4
-
$1,353 AUD
View
Price last confirmed 38 days ago
Retailer 5
-
$1,503 AUD
View
Price last confirmed 28 days ago
B+
Retailer 6
-
$1,916 AUD
View
B+
Retailer 7
-
$2,026 AUD
View
B
Retailer 8
-
$2,656 AUD
View
Most Expensive
NZ Jewellers
00154141-d021-4db4-8d6e-f4477753c3a0 · Sep 28
$4,510 AUD
$3,157 USD
View
Price last confirmed 39 days ago
8 more retailers have this diamond
Prices start from $1,171 AUDSave up to $1,484 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
0.86ct Round
$1,171 AUD