Round|Natural|GIA

0.90ct K SI1 Round Natural Diamond

VG • K/SI1 • GIA 1558242021

Certificate GIA 1558242021

Diamond specifications and retailer prices

From $742 USD
As of November 6, 2026
Save $2,420 USD (77%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,162 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.9ct natural round diamond

This 0.9ct natural round sits in the just-under-one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 1558242021. Listed at 17 retailers as of November 5, 2026, with prices from $742 to $3,162, a $2,420 spread on the same certified stone. NZ Jewellers lists it at $3,162. 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

0.90
Carat
K
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle38°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 1558242021
Dimensions5.94 × 6.03 × 3.85 mm
L/W Ratio1.02
Girdle conditionFaceted
Key to symbols
Crystal
Top View
5.94 mm6.03 mm0.90 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1558242021
Side View
Table 58.0%Crown 38°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 64.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,162 USD|Low: $742 USD|High: $3,162 USD|Avg: $1,400 USD|+26.8%
NZ Jewellers
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
November 6, 2026
Retailer 5$742 USD
Retailer 11$836 USD
Retailer 8$901 USD
Retailer 6$986 USD
Retailer 7$1,022 USD
Retailer 9$1,037 USD
Retailer 13$1,044 USD
Retailer 16$1,131 USD
Retailer 3$1,164 USD
Retailer 10$1,200 USD
Retailer 4$1,406 USD
Retailer 15$1,412 USD
Retailer 12$1,477 USD
Retailer 14$1,844 USD
Retailer 2$2,396 USD
NZ Jewellers$3,162 USD

25 data points across 16 retailers

17 retailers$742 USD to $3,162 USD

A
Cheapest Retailer
-
$742 USD
A
Retailer 2
-
$836 USD
View
A
Retailer 3
-
$901 USD
View
B+
Retailer 4
-
$986 USD
View
Retailer 5
-
$1,022 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$1,037 USD
View
B+
Retailer 7
-
$1,044 USD
View
Retailer 8
-
$1,047 USD
View
Price last confirmed 38 days ago
B+
Retailer 9
-
$1,131 USD
View
B+
Retailer 10
-
$1,164 USD
View
B+
Retailer 11
-
$1,200 USD
View
B
Retailer 12
-
$1,406 USD
View
B+
Retailer 13
-
$1,412 USD
View
B
Retailer 14
-
$1,477 USD
View
B
Retailer 15
-
$1,844 USD
View
B
Retailer 16
-
$2,396 USD
View
Most Expensive
C
NZ Jewellers
2242df72-53f1-4102-b6f8-e40cc2fbb2a0 · Nov 5
$3,162 USD
View
16 more retailers have this diamond
Prices start from $742 USDSave up to $2,420 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.

A
0.90ct Round
$742 USD