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Heart|Natural|GIA

0.70ct J SI1 Heart Natural Diamond

GD • J/SI1 • GIA 1558303285

Certificate GIA 1558303285

Diamond specifications and retailer prices

From £381 GBP
MYR 2,083 MYR
As of November 2, 2026
Save £112 GBP (23%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £493 GBP at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 0.7ct natural heart diamond

This 0.7ct natural heart sits in the half to three-quarter carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1558303285. Listed at 5 retailers as of October 31, 2026, with prices from £381 to £493, a £112 spread on the same certified stone. Blue Nile lists it at £493. 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

0.70
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558303285
Dimensions5.65 × 6.00 × 3.41 mm
L/W Ratio1.06
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
5.65 mm6.00 mm0.70 ctJ / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558303285
Side View
Table 60.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 56.8%

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 2
Current: £493 GBP|Low: £355 GBP|High: £557 GBP|Avg: £440 GBP|-11.4%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 3, 2026
Retailer 5£381 GBP
Retailer 4£386 GBP
Retailer 3£424 GBP
Retailer 2£473 GBP
Blue Nile£493 GBP

42 data points across 5 retailers

5 retailers£381 GBP to £493 GBP

A
Cheapest Retailer
-
£381 GBP
MYR 2,083 MYR
B+
Retailer 2
-
£386 GBP
$518 USD
View
Final sale: no returns
B+
Retailer 3
-
£424 GBP
SGD 769 SGD
View
B+
Retailer 4
-
£473 GBP
View
Most Expensive
B+
Blue Nile
29212498 · Oct 31
£493 GBP
$662 USD
View
4 more retailers have this diamond
Prices start from £381 GBPSave up to £112 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
0.70ct Heart
£381 GBP