Round|Natural|GIA

1.00ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6505413429

Certificate GIA 6505413429

Diamond specifications and retailer prices

From $2,765 USD
HK$21,600 HKD
As of October 30, 2026
Save $3,382 USD (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $6,597 USD at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6505413429. Listed at 22 retailers as of October 29, 2026, with a 122% 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

1.00
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6505413429
Dimensions6.35 × 6.39 × 3.99 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
6.35 mm6.39 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6505413429
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.7%

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: Oct 30
Current: $2,813 USD|Low: $2,765 USD|High: $6,270 USD|Avg: $3,785 USD|-5.2%
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
Retailer 17
October 30, 2026
Retailer 15$2,765 USD
Retailer 1$2,813 USD
Retailer 2$3,107 USD
Retailer 6$3,246 USD
Retailer 4$3,306 USD
Retailer 17$3,374 USD
Retailer 14$3,510 USD
Retailer 11$3,528 USD
Retailer 8$3,544 USD
Retailer 13$3,656 USD
Retailer 12$3,798 USD
Retailer 10$3,802 USD
Retailer 9$3,978 USD
Retailer 5$4,106 USD
Retailer 3$4,216 USD
Retailer 7$4,456 USD
Retailer 16$6,147 USD

22 data points across 17 retailers

22 retailers$2,765 USD to $6,147 USD

A
Cheapest Retailer
-
$2,765 USD
HK$21,600 HKD
A
Retailer 2
-
$2,813 USD
₹267,924 INR
View
A
Retailer 3
-
$3,107 USD
A$4,780 AUD
View
A
Retailer 4
-
$3,246 USD
View
B+
Retailer 5
-
$3,306 USD
View
B+
Retailer 6
-
$3,374 USD
View
Final sale: no returns
B+
Retailer 7
-
$3,510 USD
View
B+
Retailer 8
-
$3,528 USD
£2,778 GBP
View
Retailer 9
-
$3,544 USD
SGD 4,789 SGD
View
Price last confirmed 10 days ago
B+
Retailer 10
-
$3,656 USD
View
B+
Retailer 11
-
$3,756 USD
A$5,778 AUD
View
Retailer 12
-
$3,787 USD
View
Price last confirmed 27 days ago
B+
Retailer 13
-
$3,798 USD
£2,990 GBP
View
B+
Retailer 14
-
$3,802 USD
View
Retailer 15
-
$3,962 USD
View
Price last confirmed 31 days ago
Retailer 16
-
$3,978 USD
A$6,121 AUD
View
Price last confirmed 22 days ago
B+
Retailer 17
-
$4,106 USD
€3,910 EUR
View
B+
Retailer 18
-
$4,216 USD
£3,320 GBP
View
Retailer 19
-
$4,369 USD
View
Price last confirmed 27 days ago
Retailer 20
-
$4,456 USD
ZAR 71,990 ZAR
View
Price last confirmed 9 days ago
B
Retailer 21
-
$6,147 USD
£4,840 GBP
View
Most Expensive
NZ Jewellers
fffea347-5731-4485-9be8-40672ac21573 · Oct 3
$6,597 USD
View
Price last confirmed 28 days ago
21 more retailers have this diamond
Prices start from $2,765 USDSave up to $3,382 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
1.00ct Round
$2,765 USD