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Heart|Natural|GIA

0.70ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6511998796

Certificate GIA 6511998796

Diamond specifications and retailer prices

From £533 GBP
$714 USD
As of November 1, 2026
Save £561 GBP (51%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,873 GBP at NZ Jewellers · As of October 30, 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 I 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 6511998796. Listed at 16 retailers as of November 1, 2026, with a 105% 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6511998796
Dimensions5.20 × 6.14 × 3.77 mm
L/W Ratio1.18
Top View
5.20 mm6.14 mm0.70 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6511998796
Side View
Table 56.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.3%

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: Nov 1
Current: £1,873 GBP|Low: £533 GBP|High: £1,873 GBP|Avg: £769 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 6£533 GBP
Retailer 5£551 GBP
Retailer 4£597 GBP
Retailer 16£597 GBP
Retailer 13£605 GBP
Retailer 8£606 GBP
Retailer 3£620 GBP
Retailer 11£689 GBP
Retailer 9£719 GBP
Retailer 15£724 GBP
Retailer 2£753 GBP
Retailer 14£805 GBP
Retailer 7£888 GBP
Retailer 12£892 GBP
Retailer 10£1,094 GBP
NZ Jewellers£1,873 GBP

38 data points across 16 retailers

16 retailers£533 GBP to £1,094 GBP

B+
Cheapest Retailer
-
£533 GBP
$714 USD
B+
Retailer 2
-
£551 GBP
$738 USD
View
Final sale: no returns
B+
Retailer 3
-
£597 GBP
$800 USD
View
B+
Retailer 4
-
£597 GBP
$800 USD
View
B+
Retailer 5
-
£605 GBP
$811 USD
View
Retailer 6
-
£606 GBP
$811 USD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
£620 GBP
$831 USD
View
B+
Retailer 8
-
£689 GBP
$923 USD
View
B
Retailer 9
-
£719 GBP
View
B
Retailer 10
-
£724 GBP
$970 USD
View
B
Retailer 11
-
£753 GBP
View
B
Retailer 12
-
£805 GBP
$1,078 USD
View
Retailer 13
-
£888 GBP
A$1,830 AUD
View
Price last confirmed 28 days ago
B
Retailer 14
-
£892 GBP
ZAR 19,309 ZAR
View
B
Retailer 15
-
£1,094 GBP
View
Most Expensive
NZ Jewellers
86cd7c9d-d53c-4752-aec4-6bfea198875c · Oct 30
£1,873 GBP
$2,510 USD
View
Price under review
15 more retailers have this diamond
Prices start from £533 GBPSave up to £561 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.

B+
0.70ct Heart
£533 GBP