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Heart|Natural|GIA

1.51ct L SI1 Heart Natural Diamond

EX • L/SI1 • GIA 3545649149

Certificate GIA 3545649149

Diamond specifications and retailer prices

From £2,306 GBP
As of November 6, 2026
3 retailers carry this diamond
Most expensive: £2,615 GBP at Cape Diamonds · As of September 30, 2026
View at Cape Diamonds

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3545649149. Listed at 3 retailers as of November 6, 2026. 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

1.51
Carat
L
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3545649149
Dimensions7.30 × 7.74 × 4.45 mm
L/W Ratio1.06
Top View
7.30 mm7.74 mm1.51 ctL / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3545649149
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 57.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: £2,615 GBP|Low: £1,635 GBP|High: £2,797 GBP|Avg: £2,192 GBP|-6.5%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 1, 2026
Retailer 4£1,635 GBP
Retailer 3£1,783 GBP
Retailer 6£2,043 GBP
Retailer 10£2,114 GBP
Retailer 7£2,122 GBP
Retailer 5£2,272 GBP
Retailer 8£2,275 GBP
Retailer 9£2,306 GBP
Retailer 2£2,505 GBP
Cape Diamonds£2,615 GBP

10 data points across 10 retailers

3 retailers

Retailer 1
-
£1,635 GBP
Price last confirmed 38 days ago
B
Retailer 2
-
£2,306 GBP
View
Most Expensive
Cape Diamonds
cert_3545649149 · Sep 30
£2,615 GBP
ZAR 56,554 ZAR
View
Price last confirmed 37 days ago
2 more retailers have this diamond
Prices start from £2,306 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
£2,306 GBP