CaratHunter
Plans
Heart|Natural|GIA

1.51ct K SI2 Heart Natural Diamond

VG • K/SI2 • GIA 5231702396

Certificate GIA 5231702396

Diamond specifications and retailer prices

From £1,701 GBP
As of November 1, 2026
Save £1,856 GBP (52%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,557 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5231702396. Listed at 6 retailers as of November 1, 2026, with prices from £1,701 to £3,557, a £1,856 spread on the same certified stone. NZ Jewellers lists it at £3,557. 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
K
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.76°
Pavilion angle39.2°
OriginNatural
Grading LabGIA
CertificateGIA 5231702396
Dimensions7.10 × 8.09 × 4.52 mm
L/W Ratio1.14
Top View
7.10 mm8.09 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5231702396
Side View
Table 65.0%Crown 36.76°GirdlePavilion 39.2°CuletDepth 55.8%

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 1
Current: £3,557 GBP|Low: £1,701 GBP|High: £3,642 GBP|Avg: £2,192 GBP|-2.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 6£1,701 GBP
Retailer 3£1,704 GBP
Retailer 7£1,728 GBP
Retailer 4£1,733 GBP
Retailer 5£1,780 GBP
Retailer 8£1,988 GBP
Retailer 2£2,981 GBP
NZ Jewellers£3,557 GBP

28 data points across 8 retailers

6 retailers£1,701 GBP to £3,557 GBP

B+
Cheapest Retailer
-
£1,701 GBP
A
Retailer 2
-
£1,704 GBP
View
B+
Retailer 3
-
£1,733 GBP
View
A
Retailer 4
-
£1,780 GBP
View
B
Retailer 5
-
£2,981 GBP
View
Most Expensive
B
NZ Jewellers
0c10475e-b2b2-4a52-9d4f-29eae574bb71 · Nov 3
£3,557 GBP
$4,761 USD
View
5 more retailers have this diamond
Prices start from £1,701 GBPSave up to £1,856 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
1.51ct Heart
£1,701 GBP