CaratHunter
Plans
Heart|Natural|GIA

0.70ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 6542406180

Certificate GIA 6542406180

Diamond specifications and retailer prices

From £401 GBP
As of November 6, 2026
Save £707 GBP (64%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,655 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.7ct natural heart diamond

This 0.7ct natural heart sits in the half to three-quarter carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542406180. Listed at 11 retailers as of November 2, 2026, with a 176% 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

0.70
Carat
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Pavilion angle39.9°
OriginNatural
Grading LabGIA
CertificateGIA 6542406180
Dimensions5.22 × 6.20 × 3.70 mm
L/W Ratio1.19
Top View
5.22 mm6.20 mm0.70 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542406180
Side View
Table 58.0%CrownGirdle: MED-THKPavilion 39.9°Culet: NoneDepth 59.7%

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 6
Current: £495 GBP|Low: £344 GBP|High: £1,222 GBP|Avg: £609 GBP|-10.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8£401 GBP
Retailer 10£443 GBP
Retailer 9£448 GBP
Retailer 1£495 GBP
Retailer 7£503 GBP
Retailer 3£531 GBP
Retailer 4£606 GBP
Retailer 2£645 GBP
Retailer 5£711 GBP
Retailer 6£1,108 GBP

38 data points across 10 retailers

11 retailers£401 GBP to £1,108 GBP

A
Cheapest Retailer
-
£401 GBP
B+
Retailer 2
-
£443 GBP
View
Final sale: no returns
A
Retailer 3
-
£448 GBP
View
A
Retailer 4
-
£495 GBP
View
A
Retailer 5
-
£503 GBP
View
A
Retailer 6
-
£531 GBP
View
B+
Retailer 7
-
£606 GBP
View
B+
Retailer 8
-
£645 GBP
View
B
Retailer 9
-
£711 GBP
View
B
Retailer 10
-
£1,108 GBP
View
Most Expensive
NZ Jewellers
dd509e21-bb7b-4151-94ee-83acc4c8bcdd · Sep 25
£1,655 GBP
$2,215 USD
View
Price last confirmed 42 days ago
10 more retailers have this diamond
Prices start from £401 GBPSave up to £707 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
0.70ct Heart
£401 GBP