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Heart|Natural|GIA

1.57ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 1553558198

Certificate GIA 1553558198

Diamond specifications and retailer prices

From £3,271 GBP
$4,383 USD
As of October 31, 2026
Save £617 GBP (16%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,888 GBP at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.57ct natural heart diamond

This 1.57ct natural heart sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553558198. Listed at 7 retailers as of October 31, 2026, with prices from £3,271 to £3,888, a £617 spread on the same certified stone. Blue Nile lists it at £3,888. 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

1.57
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553558198
Dimensions6.94 × 8.20 × 4.82 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle, Indented Natural, Natural
Top View
6.94 mm8.20 mm1.57 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553558198
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £3,888 GBP|Low: £2,976 GBP|High: £5,327 GBP|Avg: £3,814 GBP|-11.5%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 5£3,271 GBP
Retailer 2£3,362 GBP
Retailer 4£3,382 GBP
Retailer 7£3,445 GBP
Retailer 3£3,490 GBP
Retailer 6£3,531 GBP
Blue Nile£3,888 GBP
Retailer 8£4,875 GBP

33 data points across 8 retailers

7 retailers£3,271 GBP to £3,888 GBP

A
Cheapest Retailer
-
£3,271 GBP
$4,383 USD
A
Retailer 2
-
£3,362 GBP
₹428,992 INR
View
A
Retailer 3
-
£3,382 GBP
$4,532 USD
View
Final sale: no returns
A
Retailer 4
-
£3,445 GBP
MYR 18,802 MYR
View
A
Retailer 5
-
£3,490 GBP
View
A
Retailer 6
-
£3,531 GBP
SGD 6,394 SGD
View
Most Expensive
A
Blue Nile
29484961 · Oct 31
£3,888 GBP
$5,210 USD
View
6 more retailers have this diamond
Prices start from £3,271 GBPSave up to £617 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
1.57ct Heart
£3,271 GBP