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Heart|Natural|GIA

1.74ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 5201790017

Certificate GIA 5201790017

Diamond specifications and retailer prices

From £3,613 GBP
$4,848 USD
As of October 31, 2026
Save £1,475 GBP (29%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £5,088 GBP at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 1.74ct natural heart diamond

This 1.74ct natural heart sits in the one-and-a-half to two carat band, graded H 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 5201790017. Listed at 4 retailers as of October 31, 2026, with prices from £3,613 to £5,088, a £1,475 spread on the same certified stone. 77 Diamonds lists it at £5,088. 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

1.74
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5201790017
Dimensions6.81 × 6.58 × 4.45 mm
L/W Ratio1.03
Top View
6.81 mm6.58 mm1.74 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5201790017
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.7%

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: Oct 31
Current: £5,088 GBP|Low: £3,575 GBP|High: £5,212 GBP|Avg: £4,486 GBP|+1.8%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 2£3,613 GBP
Retailer 3£4,049 GBP
77 Diamonds£5,088 GBP
Retailer 4£5,212 GBP

33 data points across 4 retailers

4 retailers£3,613 GBP to £5,088 GBP

A
Cheapest Retailer
-
£3,613 GBP
$4,848 USD
B+
Retailer 2
-
£3,813 GBP
$5,117 USD
View
B+
Retailer 3
-
£3,907 GBP
$5,243 USD
View
Most Expensive
B
77 Diamonds
CUSMBJBEXCFHT · Nov 2
£5,088 GBP
View
3 more retailers have this diamond
Prices start from £3,613 GBPSave up to £1,475 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
1.74ct Heart
£3,613 GBP