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Heart|Natural|GIA

0.30ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 7566743299

Certificate GIA 7566743299

Diamond specifications and retailer prices

From £282 GBP
SGD 511 SGD
As of November 1, 2026
Save £95 GBP (25%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £377 GBP at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 0.3ct natural heart diamond

This 0.3ct natural heart sits in the sub-half-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 7566743299. Listed at 5 retailers as of November 1, 2026, with prices from £282 to £377, a £95 spread on the same certified stone. 77 Diamonds lists it at £377. 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

0.30
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.56°
Pavilion angle40.54°
OriginNatural
Grading LabGIA
CertificateGIA 7566743299
Dimensions3.99 × 4.69 × 2.79 mm
L/W Ratio1.18
Culet sizeNone
Top View
3.99 mm4.69 mm0.30 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7566743299
Side View
Table 58.0%Crown 35.56°Girdle: THN-THKPavilion 40.54°Culet: NoneDepth 59.6%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £377 GBP|Low: £282 GBP|High: £377 GBP|Avg: £339 GBP|+0.3%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 5£282 GBP
Retailer 4£324 GBP
Retailer 3£363 GBP
Retailer 2£367 GBP
77 Diamonds£377 GBP

5 data points across 5 retailers

5 retailers£282 GBP to £377 GBP

B+
Cheapest Retailer
-
£282 GBP
SGD 511 SGD
B
Retailer 2
-
£324 GBP
$435 USD
View
B
Retailer 3
-
£363 GBP
View
B
Retailer 4
-
£367 GBP
$492 USD
View
Most Expensive
B
77 Diamonds
HSPUIFSFTPVVABC · Nov 2
£377 GBP
View
4 more retailers have this diamond
Prices start from £282 GBPSave up to £95 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+
0.30ct Heart
£282 GBP