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Round|Natural|GIA

1.01ct E SI1 Round Natural Diamond

GD • E/SI1 • GIA 6421402998

Certificate GIA 6421402998

Diamond specifications and retailer prices

From $5,964 SGD
$4,665 USD
As of October 30, 2026
Save $7,022 SGD (54%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $12,986 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 6421402998. Listed at 23 retailers as of October 30, 2026, with prices from $5,964 to $12,986, a $7,022 spread on the same certified stone. NZ Jewellers lists it at $12,986. 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

1.01
Carat
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6421402998
Dimensions6.60 × 6.56 × 3.79 mm
L/W Ratio1.01
Top View
6.60 mm6.56 mm1.01 ctE / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6421402998
Side View
Table 61.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 57.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $12,986 SGD|Low: $5,410 SGD|High: $12,986 SGD|Avg: $8,473 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 7$6,008 SGD
Retailer 8$6,493 SGD
Retailer 3$7,034 SGD
Retailer 10$7,034 SGD
Retailer 2$7,523 SGD
Retailer 9$7,716 SGD
Retailer 11$8,117 SGD
Retailer 4$8,325 SGD
Retailer 6$9,454 SGD
Retailer 5$11,500 SGD
NZ Jewellers$12,986 SGD

43 data points across 11 retailers

23 retailers$5,964 SGD to $12,986 SGD

B
Cheapest Retailer
-
$5,964 SGD
$4,665 USD
Retailer 2
-
$6,008 SGD
$4,700 USD
View
Price last confirmed 13 days ago
B
Retailer 3
-
$6,134 SGD
$4,798 USD
View
B
Retailer 4
-
$6,493 SGD
$5,079 USD
View
Final sale: no returns
B
Retailer 5
-
$6,584 SGD
$5,150 USD
View
B
Retailer 6
-
$6,596 SGD
CA$7,167 CAD
View
B
Retailer 7
-
$6,607 SGD
$5,168 USD
View
B
Retailer 8
-
$7,034 SGD
$5,502 USD
View
B
Retailer 9
-
$7,034 SGD
$5,502 USD
View
B
Retailer 10
-
$7,034 SGD
$5,502 USD
View
B
Retailer 11
-
$7,523 SGD
£4,634 GBP
View
B
Retailer 12
-
$7,669 SGD
$5,999 USD
View
Retailer 13
-
$7,716 SGD
A$9,285 AUD
View
Price last confirmed 27 days ago
B
Retailer 14
-
$7,862 SGD
$6,150 USD
View
B
Retailer 15
-
$7,862 SGD
$6,150 USD
View
C
Retailer 16
-
$8,117 SGD
$6,349 USD
View
C
Retailer 17
-
$8,118 SGD
$6,350 USD
View
B
Retailer 18
-
$8,325 SGD
€6,202 EUR
View
Retailer 19
-
$8,563 SGD
$6,698 USD
View
Price last confirmed 8 days ago
B
Retailer 20
-
$9,454 SGD
ZAR 119,476 ZAR
View
B
Retailer 21
-
$11,500 SGD
£7,083 GBP
View
C
Retailer 22
-
$12,633 SGD
£7,781 GBP
View
Most Expensive
C
NZ Jewellers
7dbea5e0-5c78-45b1-ad5f-77723af63666 · Oct 30
$12,986 SGD
$10,158 USD
View
22 more retailers have this diamond
Prices start from $5,964 SGDSave up to $7,022 SGD

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
1.01ct Round
$5,964 SGD