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Heart|Natural|GIA

1.51ct L SI2 Heart Natural Diamond

VG • L/SI2 • GIA 1475510321

Certificate GIA 1475510321

Diamond specifications and retailer prices

From £1,420 GBP
As of November 6, 2026
Save £482 GBP (25%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,901 GBP at Ritani · As of November 6, 2026
View at Ritani

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 SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1475510321. Listed at 5 retailers as of November 6, 2026, with prices from £1,420 to £1,901, a £482 spread on the same certified stone. Ritani lists it at £1,901. 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
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1475510321
Dimensions7.91 × 6.67 × 4.06 mm
L/W Ratio1.19
Key to symbols
Crystal, Feather, Needle
Top View
7.91 mm6.67 mm1.51 ctL / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1475510321
Side View
Table 56.0%Crown 37.6°Girdle: STK-VTKPavilion 41.2°Culet: NoneDepth 60.8%

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: £1,707 GBP|Low: £1,420 GBP|High: £2,018 GBP|Avg: £1,689 GBP|+0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Ritani
November 6, 2026
Retailer 2£1,420 GBP
Retailer 4£1,594 GBP
Retailer 3£1,674 GBP
Retailer 6£1,684 GBP
Retailer 1£1,707 GBP
Ritani£1,901 GBP
Retailer 5£2,018 GBP

40 data points across 7 retailers

5 retailers£1,420 GBP to £1,901 GBP

A
Cheapest Retailer
-
£1,420 GBP
B+
Retailer 2
-
£1,674 GBP
View
B+
Retailer 3
-
£1,707 GBP
View
Retailer 4
-
£1,872 GBP
View
Price last confirmed 62 days ago
Most Expensive
B
Ritani
D-6ERDY65PV5 · Nov 6
£1,901 GBP
$2,545 USD
View
4 more retailers have this diamond
Prices start from £1,420 GBPSave up to £482 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
£1,420 GBP