Round|Natural|GIA

0.30ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 5553182525

Certificate GIA 5553182525

Diamond specifications and retailer prices

From $394 USD
As of October 31, 2026
Save $686 USD (64%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,603 USD at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 0.3ct natural round diamond

This 0.3ct natural round sits in the sub-half-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5553182525. Listed at 18 retailers as of October 27, 2026, with a 174% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5553182525
Dimensions4.27 × 2.67 × 2.67 mm
L/W Ratio1.60
Top View
4.27 mm2.67 mm0.30 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553182525
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.8%

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: Oct 31
Current: $515 USD|Low: $340 USD|High: $1,080 USD|Avg: $558 USD|+21.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 8$340 USD
Retailer 2$394 USD
Retailer 5$402 USD
Retailer 6$442 USD
Retailer 4$466 USD
Retailer 13$480 USD
Retailer 15$480 USD
Retailer 3$498 USD
Retailer 16$500 USD
Retailer 7$504 USD
Retailer 1$515 USD
Retailer 11$638 USD
Retailer 9$648 USD
Retailer 10$849 USD
Retailer 12$970 USD
Retailer 14$1,080 USD

26 data points across 16 retailers

18 retailers$394 USD to $1,080 USD

Retailer 1
-
$356 USD
Price last confirmed 45 days ago
Retailer 2
-
$379 USD
View
Price last confirmed 9 days ago
B+
Retailer 3
-
$394 USD
View
Retailer 4
-
$408 USD
View
Price last confirmed 15 days ago
Retailer 5
-
$423 USD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$463 USD
View
B+
Retailer 7
-
$480 USD
View
B+
Retailer 8
-
$480 USD
View
B
Retailer 9
-
$498 USD
View
B+
Retailer 10
-
$500 USD
View
Retailer 11
-
$510 USD
View
Price last confirmed 11 days ago
B+
Retailer 12
-
$515 USD
£406 GBP
View
B
Retailer 13
-
$638 USD
€608 EUR
View
B
Retailer 14
-
$648 USD
ZAR 10,475 ZAR
View
B
Retailer 15
-
$849 USD
£668 GBP
View
B
Retailer 16
-
$970 USD
£764 GBP
View
B
Retailer 17
-
$1,080 USD
£850 GBP
View
Most Expensive
NZ Jewellers
a6c58f02-6568-476a-82a9-414cc1868616 · Oct 20
$1,603 USD
View
Price under review
17 more retailers have this diamond
Prices start from $394 USDSave up to $686 USD

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 Round
$394 USD