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Heart|Natural|GIA

1.51ct L SI1 Heart Natural Diamond

VG • L/SI1 • GIA 6233603448

Certificate GIA 6233603448

Diamond specifications and retailer prices

From £1,839 GBP
As of November 2, 2026
Save £2,051 GBP (53%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,890 GBP at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6233603448. Listed at 6 retailers as of November 2, 2026, with prices from £1,839 to £3,890, a £2,051 spread on the same certified stone. NZ Jewellers lists it at £3,890. 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

1.51
Carat
L
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.4°
Pavilion angle41.37°
OriginNatural
Grading LabGIA
CertificateGIA 6233603448
Dimensions6.70 × 7.99 × 4.83 mm
L/W Ratio1.19
Girdle conditionVery Thick
Key to symbols
Feather, Crystal, Etch Channel, Pinpoint
Top View
6.70 mm7.99 mm1.51 ctL / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6233603448
Side View
Table 62.0%Crown 38.4°GirdlePavilion 41.37°Culet: NoneDepth 60.4%

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 2
Current: £3,890 GBP|Low: £1,823 GBP|High: £3,928 GBP|Avg: £2,204 GBP|-1.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 7£1,823 GBP
Retailer 2£1,839 GBP
Retailer 3£1,849 GBP
Retailer 6£1,861 GBP
Retailer 5£1,935 GBP
Retailer 4£1,947 GBP
NZ Jewellers£3,890 GBP

33 data points across 7 retailers

6 retailers£1,839 GBP to £3,890 GBP

B+
Cheapest Retailer
-
£1,839 GBP
B+
Retailer 2
-
£1,849 GBP
View
B+
Retailer 3
-
£1,861 GBP
View
B+
Retailer 4
-
£1,935 GBP
View
B+
Retailer 5
-
£1,947 GBP
View
Most Expensive
C
NZ Jewellers
bac8e864-fb33-46b6-997d-0f7a1d18bc98 · Nov 3
£3,890 GBP
$5,207 USD
View
5 more retailers have this diamond
Prices start from £1,839 GBPSave up to £2,051 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+
1.51ct Heart
£1,839 GBP