Heart|Natural|GIA

0.71ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 6381818387

Certificate GIA 6381818387

Diamond specifications and retailer prices

From £544 GBP
As of November 5, 2026
Save £781 GBP (59%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,269 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.71ct natural heart diamond

This 0.71ct natural heart sits in the half to three-quarter 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 6381818387. Listed at 19 retailers as of November 2, 2026, with a 144% 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

0.71
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6381818387
Dimensions4.99 × 6.02 × 3.67 mm
L/W Ratio1.21
Top View
4.99 mm6.02 mm0.71 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6381818387
Side View
Table 60.0%CrownGirdle: NULPavilionCulet: NoneDepth 61.0%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £839 GBP|Low: £535 GBP|High: £1,340 GBP|Avg: £869 GBP|+5.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 6£544 GBP
Retailer 8£545 GBP
Retailer 10£667 GBP
Retailer 12£723 GBP
Retailer 2£753 GBP
Retailer 4£801 GBP
Retailer 3£835 GBP
Retailer 9£837 GBP
Retailer 1£839 GBP
Retailer 5£1,080 GBP
Retailer 11£1,088 GBP
Retailer 7£1,325 GBP

43 data points across 12 retailers

19 retailers£544 GBP to £1,325 GBP

B+
Cheapest Retailer
-
£544 GBP
B+
Retailer 2
-
£545 GBP
View
B
Retailer 3
-
£667 GBP
View
Final sale: no returns
B
Retailer 4
-
£708 GBP
View
B
Retailer 5
-
£723 GBP
View
Retailer 6
-
£723 GBP
View
Price last confirmed 9 days ago
B
Retailer 7
-
£752 GBP
View
B
Retailer 8
-
£753 GBP
View
B
Retailer 9
-
£754 GBP
View
B
Retailer 10
-
£835 GBP
View
B
Retailer 11
-
£835 GBP
View
B
Retailer 12
-
£837 GBP
View
B
Retailer 13
-
£839 GBP
View
B
Retailer 14
-
£944 GBP
View
B
Retailer 15
-
£1,029 GBP
View
B
Retailer 16
-
£1,080 GBP
View
Retailer 17
-
£1,088 GBP
View
Price last confirmed 33 days ago
B
Retailer 18
-
£1,325 GBP
View
Most Expensive
NZ Jewellers
6cbc694c-b8db-4386-94e3-79b60b490c96 · Nov 5
£2,269 GBP
$3,037 USD
View
Price under review
18 more retailers have this diamond
Prices start from £544 GBPSave up to £781 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+
0.71ct Heart
£544 GBP