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Round|Natural|GIA

0.90ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1455851206

Certificate GIA 1455851206

Diamond specifications and retailer prices

From $2,590 NZD
$1,460 USD
As of October 25, 2026
Save $2,912 NZD (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $7,619 NZD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.9ct natural round diamond

This 0.9ct natural round sits in the just-under-one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1455851206. Listed at 17 retailers as of October 25, 2026, with a 112% 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

0.90
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1455851206
Dimensions6.17 × 6.10 × 3.87 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.17 mm6.10 mm0.90 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1455851206
Side View
Table 57.0%Crown 35°Girdle: THN-STKPavilion 41.4°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: $3,010 NZD|Low: $2,177 NZD|High: $5,539 NZD|Avg: $3,402 NZD|+3.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 4$2,590 NZD
Retailer 5$2,612 NZD
Retailer 7$2,759 NZD
Retailer 6$2,889 NZD
Retailer 8$2,964 NZD
Retailer 1$3,010 NZD
Retailer 2$4,268 NZD
Retailer 9$4,492 NZD
Retailer 3$5,503 NZD

39 data points across 9 retailers

17 retailers$2,590 NZD to $5,503 NZD

B+
Cheapest Retailer
-
$2,590 NZD
$1,460 USD
B+
Retailer 2
-
$2,612 NZD
$1,472 USD
View
Final sale: no returns
B+
Retailer 3
-
$2,622 NZD
$1,478 USD
View
B+
Retailer 4
-
$2,731 NZD
$1,539 USD
View
B
Retailer 5
-
$2,830 NZD
$1,595 USD
View
B
Retailer 6
-
$2,830 NZD
$1,595 USD
View
B
Retailer 7
-
$2,889 NZD
$1,628 USD
View
B+
Retailer 8
-
$2,961 NZD
$1,669 USD
View
B+
Retailer 9
-
$2,964 NZD
$1,671 USD
View
B+
Retailer 10
-
$3,010 NZD
£1,336 GBP
View
B
Retailer 11
-
$3,194 NZD
$1,800 USD
View
B
Retailer 12
-
$3,194 NZD
$1,800 USD
View
B
Retailer 13
-
$3,265 NZD
$1,840 USD
View
B
Retailer 14
-
$3,300 NZD
$1,860 USD
View
B
Retailer 15
-
$4,268 NZD
€2,291 EUR
View
B
Retailer 16
-
$5,503 NZD
£2,442 GBP
View
Most Expensive
NZ Jewellers
4bc21d95-6706-46f4-af1d-e750ebd3172e · Oct 30
$7,619 NZD
$4,294 USD
View
Price under review
16 more retailers have this diamond
Prices start from $2,590 NZDSave up to $2,912 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.

B+
0.90ct Round
$2,590 NZD