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Heart|Natural|GIA

1.00ct E SI2 Heart Natural Diamond

VG • E/SI2 • GIA 6551320641

Certificate GIA 6551320641

Diamond specifications and retailer prices

From £1,291 GBP
As of November 5, 2026
Save £2,267 GBP (64%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,650 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551320641. Listed at 16 retailers as of November 5, 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. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
E
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.3°
Pavilion angle42.5°
OriginNatural
Grading LabGIA
CertificateGIA 6551320641
Dimensions6.93 × 5.94 × 4.28 mm
L/W Ratio1.17
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Indented Natural
Top View
6.93 mm5.94 mm1.00 ctE / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551320641
Side View
Table 60.0%Crown 37.3°Girdle: MED-THKPavilion 42.5°Culet: NoneDepth 61.8%

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 5
Current: £3,558 GBP|Low: £1,234 GBP|High: £3,650 GBP|Avg: £1,705 GBP|-2.5%
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
November 6, 2026
Retailer 7£1,291 GBP
Retailer 12£1,318 GBP
Retailer 10£1,346 GBP
Retailer 2£1,376 GBP
Retailer 5£1,437 GBP
Retailer 4£1,459 GBP
Retailer 11£1,459 GBP
Retailer 9£1,526 GBP
Retailer 3£1,561 GBP
Retailer 6£1,584 GBP
Retailer 13£1,683 GBP
Retailer 8£2,556 GBP
NZ Jewellers£3,558 GBP

43 data points across 13 retailers

16 retailers£1,291 GBP to £3,558 GBP

A
Cheapest Retailer
-
£1,291 GBP
A
Retailer 2
-
£1,318 GBP
View
A
Retailer 3
-
£1,346 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,376 GBP
View
A
Retailer 5
-
£1,459 GBP
View
Retailer 6
-
£1,459 GBP
View
Price last confirmed 8 days ago
Retailer 7
-
£1,496 GBP
View
Price last confirmed 39 days ago
B+
Retailer 8
-
£1,526 GBP
View
B+
Retailer 9
-
£1,561 GBP
View
B+
Retailer 10
-
£1,584 GBP
View
B+
Retailer 11
-
£1,683 GBP
View
Retailer 12
-
£1,727 GBP
View
Price last confirmed 61 days ago
Retailer 13
-
£1,727 GBP
View
Price last confirmed 38 days ago
B
Retailer 14
-
£2,556 GBP
View
B
Retailer 15
-
£3,558 GBP
View
Most Expensive
NZ Jewellers
fde212ad-3874-4797-9122-305b00e65026 · Sep 28
£3,650 GBP
$4,885 USD
View
Price last confirmed 39 days ago
15 more retailers have this diamond
Prices start from £1,291 GBPSave up to £2,267 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
1.00ct Heart
£1,291 GBP