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Heart|Natural|GIA

1.20ct H SI1 Heart Natural Diamond

ID • H/SI1 • GIA 6522713397

Certificate GIA 6522713397

Diamond specifications and retailer prices

From £1,606 GBP
As of November 6, 2026
Save £2,774 GBP (63%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £4,380 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded H 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 6522713397. Listed at 23 retailers as of November 5, 2026, with prices from £1,606 to £4,380, a £2,774 spread on the same certified stone. NZ Jewellers lists it at £4,380. 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

1.20
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6522713397
Dimensions7.52 × 6.69 × 4.27 mm
L/W Ratio1.12
Top View
7.52 mm6.69 mm1.20 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6522713397
Side View
Table 58.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 56.8%

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: £4,380 GBP|Low: £1,606 GBP|High: £4,405 GBP|Avg: £2,450 GBP|-0.6%
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
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 6£1,606 GBP
Retailer 2£1,679 GBP
Retailer 8£1,934 GBP
Retailer 16£1,972 GBP
Retailer 17£1,994 GBP
Retailer 11£2,028 GBP
Retailer 12£2,032 GBP
Retailer 19£2,095 GBP
Retailer 10£2,107 GBP
Retailer 3£2,176 GBP
Retailer 7£2,201 GBP
Retailer 14£2,217 GBP
Retailer 13£2,238 GBP
Retailer 4£2,279 GBP
Retailer 5£2,418 GBP
Retailer 15£2,557 GBP
Retailer 18£3,660 GBP
Retailer 9£4,317 GBP
NZ Jewellers£4,380 GBP

22 data points across 19 retailers

23 retailers£1,606 GBP to £4,380 GBP

A
Cheapest Retailer
-
£1,606 GBP
A
Retailer 2
-
£1,679 GBP
View
B+
Retailer 3
-
£1,934 GBP
View
Final sale: no returns
B+
Retailer 4
-
£1,948 GBP
View
B+
Retailer 5
-
£1,972 GBP
View
B+
Retailer 6
-
£1,994 GBP
View
B+
Retailer 7
-
£2,028 GBP
View
B+
Retailer 8
-
£2,032 GBP
View
B+
Retailer 9
-
£2,093 GBP
View
B+
Retailer 10
-
£2,095 GBP
View
Retailer 11
-
£2,107 GBP
View
Price last confirmed 9 days ago
B+
Retailer 12
-
£2,176 GBP
View
B+
Retailer 13
-
£2,201 GBP
View
B+
Retailer 14
-
£2,217 GBP
View
B+
Retailer 15
-
£2,238 GBP
View
B+
Retailer 16
-
£2,279 GBP
View
B+
Retailer 17
-
£2,364 GBP
View
B+
Retailer 18
-
£2,418 GBP
View
Retailer 19
-
£2,464 GBP
View
Price last confirmed 31 days ago
B+
Retailer 20
-
£2,557 GBP
View
B
Retailer 21
-
£3,660 GBP
View
Retailer 22
-
£4,317 GBP
View
Price last confirmed 10 days ago
Most Expensive
B
NZ Jewellers
37a5c876-1c88-4918-9694-8a48a035d9d6 · Nov 5
£4,380 GBP
$5,863 USD
View
22 more retailers have this diamond
Prices start from £1,606 GBPSave up to £2,774 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
1.20ct Heart
£1,606 GBP