CaratHunter
Plans
Heart|Natural|GIA

0.90ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 2554478758

Certificate GIA 2554478758

Diamond specifications and retailer prices

From £680 GBP
$912 USD
As of November 2, 2026
Save £1,628 GBP (71%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £2,308 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.9ct natural heart diamond

This 0.9ct natural heart sits in the just-under-one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2554478758. Listed at 5 retailers as of October 30, 2026, with prices from £680 to £2,308, a £1,628 spread on the same certified stone. NZ Jewellers lists it at £2,308. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2554478758
Dimensions5.98 × 6.63 × 3.72 mm
L/W Ratio1.11
Key to symbols
Twinning Wisp, Feather
Top View
5.98 mm6.63 mm0.90 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554478758
Side View
Table 55.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 56.1%

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 2
Current: £2,308 GBP|Low: £587 GBP|High: £2,308 GBP|Avg: £1,186 GBP|+14.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 5£680 GBP
Retailer 4£860 GBP
Retailer 2£991 GBP
Retailer 6£1,051 GBP
Retailer 3£1,348 GBP
NZ Jewellers£2,308 GBP

27 data points across 6 retailers

5 retailers£680 GBP to £2,308 GBP

A
Cheapest Retailer
-
£680 GBP
$912 USD
Final sale: no returns
B+
Retailer 2
-
£860 GBP
$1,154 USD
View
B+
Retailer 3
-
£991 GBP
€1,267 EUR
View
B
Retailer 4
-
£1,348 GBP
View
Most Expensive
C
NZ Jewellers
4b839365-cd85-42b0-a96a-884843656062 · Oct 30
£2,308 GBP
$3,097 USD
View
4 more retailers have this diamond
Prices start from £680 GBPSave up to £1,628 GBP

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
0.90ct Heart
£680 GBP