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Heart|Natural|GIA

1.70ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 6555648690

Certificate GIA 6555648690

Diamond specifications and retailer prices

From £2,202 GBP
As of November 6, 2026
Save £803 GBP (27%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,005 GBP at GemTrove · As of November 6, 2026
View at GemTrove

About this 1.7ct natural heart diamond

This 1.7ct 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555648690. Listed at 6 retailers as of November 6, 2026, with prices from £2,202 to £3,005, a £803 spread on the same certified stone. GemTrove lists it at £3,005. 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

1.70
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555648690
Dimensions7.15 × 8.40 × 5.00 mm
L/W Ratio1.17
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Cloud, Cavity, Indented Natural
Top View
7.15 mm8.40 mm1.70 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555648690
Side View
Table 56.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.5%

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: £2,209 GBP|Low: £2,112 GBP|High: £2,897 GBP|Avg: £2,421 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 4£2,202 GBP
Retailer 1£2,209 GBP
Retailer 3£2,244 GBP
Retailer 2£2,353 GBP
Retailer 5£2,569 GBP

46 data points across 5 retailers

6 retailers£2,202 GBP to £3,005 GBP

A
Cheapest Retailer
-
£2,202 GBP
A
Retailer 2
-
£2,209 GBP
View
A
Retailer 3
-
£2,244 GBP
View
Final sale: no returns
A
Retailer 4
-
£2,353 GBP
View
A
Retailer 5
-
£2,569 GBP
View
Most Expensive
B+
GemTrove
GT-N-01270066-98 · Nov 6
£3,005 GBP
A$6,188 AUD
View
5 more retailers have this diamond
Prices start from £2,202 GBPSave up to £803 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
1.70ct Heart
£2,202 GBP