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Round|Natural|GIA

5.03ct I SI1 Round Natural Diamond

ID • I/SI1 • GIA 98

Certificate GIA 98

Diamond specifications and retailer prices

From $78,392 USD
As of October 31, 2026
Save $12,089 USD (13%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $90,481 USD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 5.03ct natural round diamond

This 5.03ct natural round sits in the over five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 3 retailers as of October 31, 2026, with prices from $78,392 to $90,481, a $12,089 spread on the same certified stone. Blue Nile lists it at $90,481. 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

5.03
Carat
I
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 98
Dimensions11.04 × 11.08 × 6.77 mm
L/W Ratio1.00
Top View
11.04 mm11.08 mm5.03 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 98
Side View
Table 56.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 61.2%

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: Oct 31
Current: $90,481 USD|Low: $77,613 USD|High: $90,481 USD|Avg: $83,323 USD
Blue Nile
Retailer 2
Retailer 3
September 23, 2026
Retailer 2$78,392 USD
Retailer 3$82,097 USD
Blue Nile$90,481 USD

3 data points across 3 retailers

3 retailers$78,392 USD to $90,481 USD

B+
Cheapest Retailer
-
$78,392 USD
B+
Retailer 2
-
$82,097 USD
View
Most Expensive
B
Blue Nile
5626686 · Oct 31
$90,481 USD
View
2 more retailers have this diamond
Prices start from $78,392 USDSave up to $12,089 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+
5.03ct Round
$78,392 USD