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Heart|Natural|GIA

1.65ct K IF Heart Natural Diamond

GD • K/IF • GIA 6565791309

Certificate GIA 6565791309

Diamond specifications and retailer prices

From £3,612 GBP
As of November 6, 2026
Save £661 GBP (15%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £4,273 GBP at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.65ct natural heart diamond

This 1.65ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and IF clarity (flawless or internally-flawless), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6565791309. Listed at 4 retailers as of November 5, 2026, with prices from £3,612 to £4,273, a £661 spread on the same certified stone. Blue Nile lists it at £4,273. 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

1.65
Carat
K
Colour
IF
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565791309
Dimensions7.16 × 8.45 × 5.00 mm
L/W Ratio1.18
Culet sizeNone
Top View
7.16 mm8.45 mm1.65 ctK / IF
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6565791309
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £4,273 GBP|Low: £3,612 GBP|High: £4,273 GBP|Avg: £3,907 GBP
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 2£3,612 GBP
Retailer 3£3,790 GBP
Retailer 4£3,863 GBP
Blue Nile£4,273 GBP

3 data points across 4 retailers

4 retailers£3,612 GBP to £4,273 GBP

B+
Cheapest Retailer
-
£3,612 GBP
B+
Retailer 2
-
£3,790 GBP
View
B+
Retailer 3
-
£3,863 GBP
View
Most Expensive
B
Blue Nile
30562913 · Nov 5
£4,273 GBP
$5,720 USD
View
3 more retailers have this diamond
Prices start from £3,612 GBPSave up to £661 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+
1.65ct Heart
£3,612 GBP